<template>
  <el-upload
    class="avatar-uploader"
    action="./avatar/upload"
    :show-file-list="false"
    :on-success="handleAvatarSuccess"
    :before-upload="beforeAvatarUpload"
    name="avatar"
  >
    <img
      v-if="imageUrl"
      :src="imageUrl"
      class="avatar"
    >
    <i
      v-else
      class="el-icon-plus avatar-uploader-icon"
    />
  </el-upload>
</template>

<script>
    export default {
        name: "AvatarUploader",
        model: {
            prop: 'imageUrl',
            event: 'upload-success'
        },
        props:{
            imageUrl:{
                type:String,
                default:''
            }
        },
        methods: {
            handleAvatarSuccess(res, file) {
                //this.imageUrl = URL.createObjectURL(file.raw);
              console.log(res)
                this.$emit("upload-success",res.data);
            },
            beforeAvatarUpload(file) {
                const isJPG = file.type === 'image/jpeg';
                const isLt2M = file.size / 1024 / 1024 < 2;

                if (!isJPG) {
                    this.$message.error('上传头像图片只能是 JPG 格式!');
                }
                if (!isLt2M) {
                    this.$message.error('上传头像图片大小不能超过 2MB!');
                }
                return isJPG && isLt2M;
            }
        }
    }
</script>

<style>
  .avatar-uploader .el-upload {
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
  }
  .avatar-uploader .el-upload:hover {
    border-color: #409EFF;
  }
  .avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 178px;
    height: 178px;
    line-height: 178px;
    text-align: center;
  }
  .avatar {
    width: 178px;
    height: 178px;
    display: block;
  }
</style>